John bean



(No Model.)

J. BEAN.

. SPRAYING PUMP.

N0. 351,088. Patented Oct. 19,1886.

WITJVESSES INVENTOR @flofol W 9 mm,

UNITED STATES PATENT QFEICE.

JOHN BEAN, OF LOS GATOS, CALIFORNIA.

SPRAYlNG-PUMP.

SPECIFICATION forming part of Letters Patent No. 351,088, dated October 19, 1886.

Application filed July 8, 1886. Serial No. 207,464. (No model.)

To all whom it may concern.-

Be it known that I, JOHN BEAN, a citizen of the United States, residing at Los Gatos, in the county of Santa Clara and State of California, have invented certain new and useful Improvements in Spraying-Pumps, of which the following is aspecification, reference being bad therein to the accompanying drawings.

This invention relates to certain new and useful improvements in spi'ayingpumps; and it has for its objects to provide an improved construction over that embodied in Letters Patent granted me March 16, 1886, No. 337,919, for spraying-pumps, and which present construction is designed to carry out these several things, to wit: to pump liquids and air at the same time into a charge-receptacle; to pump liquid, exclusive of the presence of air, into such receptacle; to pump air, exclusive of the presence of liquid, into such receptacle, and to discharge the liquid and air in a commingled state through a hose connected with that receptacle.

In the accompanying drawings, forming a part of this specification, and on which like reference-letters indicate corresponding parts, Figure 1 represents a partial vertical sectional view and a partial side elevation of my improved pump, showing also a supply'tank in proximity; and Fig. 2, a sectional view of the discharge pipe and hose.

The letter A designates a platform of any suitable character, upon which is supported my improved pump. A pump-cylinder, B, having a plunger and an actuatingrod, C, is connected at its lower end to a pipe, D, which leads through an elbow, E, to the lower end of a charge-receptacle,F, whereby communication between the cylinder and the receptacle is established, a yalve, G, being located within the pipe D to cut off a backflow from the receptacle to the cylinder. This receptacle is preferably of the shape shown, and is constructed of sheet metal of sufficient strength to withstand the requisite pressure created in it by the forced injection of air to effecta somewhat violent ejection of the contents. Communicating with the pump-cylinder is a chamber, H, through a valve, I, opening toward the cylinder, and supplied with a cock, J, which serves to cut off communication bee tween the liquid-supply and the said chamber, if desired. By any convenient coupling I attach a hose or other supply-pipe, K, to the chamber H. In the present instance this supply-pipe is shown as arranged to form a siphon, one end being in a supply tank which contains the liquid which is to be sprayed.

While I prefer to supply the liquid through a siphon, as it lessens the labor of the pump, since the water flows more freely, still I may supply the liquid in any other convenient manner; and an air-pipe, L, is attached to the chamber H, or at any other point between the entrance of the water into the apparatus and the charge-receptacle. This airpipe is supplied with a cock whereby the admission of air into it may be controlled. Projecting from the elbow E is apipe, M, to which is attached a discharge-conduit, N, having a cock, 0, and one or two hose, P, the latter being coupled to the conduit in any of the known ways. The operation of my invention will now be explained. The cock J being opened and the plunger operated in the cylinder B, the air will be consequently exhausted from the hose K, and the liquid in the supply-tank, under the influence ot' the hydrostatic pressure, will flow into the pipe-H, and thence into the pipes D and M, rising in the conduit N and the charge-receptacle F. The cock of the air-pipe having been previously opened, air will be drawn into the chamber H by the water and by the action of the plunger. The cock 0 prevents the discharge of the liquid from the conduit N. The action of the plunger being continued, the liquid soon begins to rise in the charge-receptacle, while the accompanying air (more or less) escapes through the liquid and collects in a graduallyincreasing quantity and pressure in the upper portion of the receptacle, the valve G acting to cut off the backflow of the liquid and air. It will now be observed that I have liquid and air confined in a receptacle and under the pressure of 5 the expansive force of the air.

It is a fact in physics that liquids subjected to atmospheric pressure upon theirsurface will be combined with the air to a more or less extent, according to the nature of the liquid. This fact is even more the case when the air and liquid have been commingled by the operation of conducting them to a receptacle. As a consequence the liquid in flowing from the hose, after the cock 0 has been opened, 1s

found to be mixed with atmospheric air, the

result of which is to give the stream a spluttering and divided character, rendering it into the form most suited to water plants, trees, &c. This I have ascertained by repeated trials to be a fact and to be highly useful. The increase of atmospheric pressure and (should the liquid be somewhat low in the receptacle) of the spluttering action is brought by turning oft the cock J and continuing the action of the plunger. On the other hand, an increase in the quantity of the liquid in the receptacle is brought about by opening the cock J, closing the cock of the air-pipe, and actuating the plunger. 1

The apparatus is principally intended to be moved from place to place, being comparatively small; butit may be constructed oflarger size, and with a view to being made stationarya It should be noticed that, practically speaking, when the liquid is drawn from a depth much below theplane occupied by the'appara-f, tus, it will have to be done separately from the air, because to open the air-pipe would wholly, or partially at least, retard the income of the liquid. Not so, however, when the siphon; form of supply-pipe is used, for. it causes the liquid to flow so freely that the essential func tion of the plunger (before the time of commencing to create a pressure) is to keep the air-pipe free of liquid and to draw in the air and commingle it with the liquid.

Having thus fully described myinvention, whatI claim as new, and desire to secure by Letters Patent, is

1. In a spraying-pump, the combination,

with a portable charge-receptacle, of a cylinder having a plunger and connected to and communicating with that receptacle, an airtube communicating with the open air and with the receptacle, and located between the cylinder and the liquid-inlet, a discharge-conduit having a cut-off and leading from the receptacle, and a valve between the air-pipe and the cylinder, and a valve between the latter and, the .receptacle.

2. In. a spraying-pump, the combination, with a portable charge-receptacle, of a cylinder having a plunger and communicating with that receptacle, an air-pipe communicating with the open air and with the receptacle, a valve between the air-pipe and the cylinder, and a valve between the cylinder and the receptacle, and a dischargeconduitleading from the receptacle and havi nga cook, the said pipe, cylinder, and conduit being located outside of the receptacle and portable with it.

3. In a spraying-pump, the combination,

4. In a spraying-pump, the combination,

with a portable charge-receptacle, of a cylin der having a plunger and connected to and communicating with that receptacle, a discharge-conduit leading from said receptacle and having a cut-off, and a siphon communicating with a supply-tank and with the receptacle to supply liquid, and an air-pipe to con duct air to the liquid, whereby air and liquid will be acted upon by the pump for the purpose of forcing them into the receptacle.

5. In a spraying-pump, the combination, with a portable charge-receptacle, a discharge conduit or passage leading from said receptacle, and having a cut-off, an air-supply, and a cylinder having a plunger and connected to and communicating with that receptacle, of a siphon communicating with a supply-tank and with "the apparatus, whereby liquidis supplied.

In testimony whereof I affix my signature in presence of two witnesses.

' JOHN BEAN.

Witnesses:

M. KIRKPATRICK, JOHN F. ToBIN." 

